Enhanced anaerobic fermentation of waste activated sludge by reverse osmosis brine and composition distribution in fermentative liquid - Details

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Abstract：

This　study　reported　a　“treating　waste　by　waste”　strategy　to　dispose　waste　activated　sludge　(WAS),　i.e.　reverse　osmosis　(RO)　brine-enhanced　anaerobic　fermentation.　RO　brine　was　hazardous　by-product　from　seawater　desalination　process,　which　contains　numerous　Na+.　After　4-day　RO　brine-enhanced　anaerobic　fermentation　at　Na+　concentration　of　0.33　mol/L,　5.0　g/L　VSS　reduction　(37.9%　of　VSS)　was　achievable,　leading　to　considerable　soluble　chemical　oxygen　demand　(SCOD)　release　of　349.6　mg/g　VSS.　Acetic　acid　was　predominant　component　in　SCOD　(31.1%),　followed　by　propionic,　butyric,　valeric　acids　and　proteins　(14.0–17.6%).　Sludge　solubilization　and　SCOD　composition　in　the　enhanced　anaerobic　fermentation　with　RO　brine　and　NaCl　agent　were　similar,　whereas　less　nutrient　release　and　extracellular　polymeric　substance　(EPS)　disruption　were　achieved　by　RO　brine,　attributing　to　the　Ca2+&Mg2+-caused　skeleton　strengthening　on　EPS　matrix.　Such　RO　brine-based　strategy　provided　environmental　and　economic　benefits,　e.g.　none　chemical　consumption,　synchronous　disposal　of　WAS　and　RO　brine.　©　2020　Elsevier　Ltd

Keyword：

Anaerobic fermentation; Carbon recovery; Reverse osmosis brine; Sludge solubilization; Waste activated sludge

Community：

[ 1 ] [Pang, H.]School of Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 2 ] [Pang, H.]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 3 ] [Pang, H.]Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore
[ 4 ] [Wang, L.]School of Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 5 ] [Wang, L.]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 6 ] [He, J.]School of Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 7 ] [He, J.]School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
[ 8 ] [Zhang, P.]School of Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 9 ] [Zhang, P.]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
[ 10 ] [Yan, Z.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
[ 11 ] [Ma, Y.]Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore
[ 12 ] [Nan, J.]School of Environment, Harbin Institute of Technology, Harbin, 150090, China

Reprint 's Address：

[He, J.]School of Civil Engineering, Guangzhou UniversityChina

Email：

junguohe@263.net

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Source ：

Bioresource Technology

ISSN： 0960-8524

Year： 2020

Volume： 318

9 . 6 4 2

JCR@2020

9 . 7 0 0

JCR@2023

ESI HC Threshold：156

JCR Journal Grade：1

CAS Journal Grade：1

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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